﻿using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApp22
{
    class Program
    {
        static void Main(string[] args)
        {
            Stack stack = new Stack();
            stack.Push("商");
            stack.Push("宫");
            stack.Push("角");
            stack.Push("徵");
            stack.Push("羽");
            Console.WriteLine("古琴五弦");
            while (stack .Count != 0)
            {
                Console.WriteLine(stack .Pop ());
            }
        }
    }
}
